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Who Discovered Nickel?

Who Discovered Nickel?
Known as a chemical element that is identified with the atomic number of 28 and symbol of Ni, nickel is a metal that is ductile and hard. This element is classified under the transition metals. The metal is usually present in alloys like taenite and kamacite. It is also present in iron meteorites. Because of the distinct characteristics or properties of this element, it is widely used in producing metal apparatuses. In order to know more about this element, it is best if we start with the history of the discovery of nickel. Historical Background Who discovered nickel? This transition element was discovered by Swedish chemist Axel Fredrik Cronstedt in 1751. The discovery of the element happened when the chemist isolated copper from niccolite. Instead of extracting the metal, he isolated another element with silvery white color that Cronstedt named nickel. Even if Cronstedt was recognized as the scientist who discovered the element, there were evidences, which proved that nickel...

Who Discovered Aluminum?

Who Discovered Aluminum?
Though today it is one of the most common metals in the world, there was a time when aluminum was actually one of the rarest and most precious. It took the scientists who discovered aluminum years of experimentation before they succeeded in refining this elusive element. Aluminum originates from the compound “alum,” given that name by French chemist and politician Louis-Bernard Guyton de Morveau in 1761. From as far back as 1787, scientists had hypothesized the existence of an unknown base metal in alum. While not quite the man who discovered aluminum, British chemist and inventor Sir Humphry Davy, can be credited for naming it (first as “alumium” before being given its current designation) in 1808. It was in 1825 when a Danish chemist and physicist named Hans Christian Oersted developed a way of extracting small amounts of aluminum from alum by having anhydrous aluminum chloride react with potassium amalgam to produce a chunk of metal with properties similar to those of tin. German...

Who Discovered Mercury?

Who Discovered Mercury?
Mercury, be it the element or the planet, is quite elusive when it comes to its discoverer. But at least, as far as who discovered mercury the element is concerned, there’s a name worth mentioning. The First Unnamed Discoverers The Babylonians, among the first people groups of early civilization, is credited to be the first to put on record the use of the element mercury. This was some 3000 years ago when it was mixed freely with other products. It was then sometimes added in creams and ointments in dangerous proportions because it was not yet known then as a chemical element. At times poisoning was the result. The discovery of mercury as an element was in the 18th century. Incidentally, at about the same time, also 3000 years ago, the Sumerians discovered the planet Mercury. Like the Babylonians who discovered mercury and put in many records but not as an element, the Sumerians recorded the planet mercury quite a lot. It could be said that both element and planet had probably started...

Who Discovered Copper?

Who Discovered Copper?
Introduction Who discovered copper? Nobody knows. But evidence suggests that copper was the first metal ever discovered and used by man. Or at least one of the oldest. In modern day Iraq, archeologists once found a copper pendant over 10,000 years old. Unlike silver, copper is often found uncompounded in its natural state. So it is likely that humans learned to use copper first, perhaps along with gold and meteoritic iron. History of Copper Two of the world’s oldest civilizations made use of copper – Chaldea and Sumer. They used copper to make military equipment such as bows, arrows, spear heads and helmets. Archeologists have also unearthed small items like copper pins, harpoons blades and pots made of bronze (a copper alloy). Sumerian craftsmen made beautiful sculptures made from copper and mounted them on walls. The Imdugud Relief is a fine example of this. It dates from 3,100BC and shows an eagle with the head of a lion, holding a stag in each claw. Copper can be mixed with other...

Who Discovered the Slope Formula?

Who Discovered the Slope Formula?
The slope formula determines the position of a line with respect to its “x” and “y” coordinates. This mathematical calculation is the concern of Analytical Geometry which solves linear and geometric problem with the aid of Algebra. Thus, to the question who discovered the slope formula, it is necessary to look into who started Analytic Geometry. Rene Descartes 1596 Rene or Renee Decartes is the father of Analytical Geometry. He was a French mathematician, physicist, philosopher, and theologian. Many mathematics experts acknowledge him as the man who discovered the slope formula. He was said to have provided a method to solve the problem of lines and slopes in mathematics by his prowess in Algebra and Geometry. The basic slope formula is y=mx+b while the more complex point-slope formula is y-yl=m(x-x1). Because Descartes is the father of Analytical Geometry and this subject centers mostly on lines and slopes, he was the first to introduce solutions to slopes and linear problems....